CN102087947B - Field-emission electronic device - Google Patents
Field-emission electronic device Download PDFInfo
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- CN102087947B CN102087947B CN201010612598.1A CN201010612598A CN102087947B CN 102087947 B CN102087947 B CN 102087947B CN 201010612598 A CN201010612598 A CN 201010612598A CN 102087947 B CN102087947 B CN 102087947B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/30—Cold cathodes, e.g. field-emissive cathode
- H01J1/304—Field-emissive cathodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/123—Flat display tubes
- H01J31/125—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection
- H01J31/127—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection using large area or array sources, i.e. essentially a source for each pixel group
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
Abstract
The invention provides a field-emission electronic device comprising an insulated substrate, wherein the insulated substrate is provided with a surface; a plurality of line electrode leads and a plurality of row electrode leads are respectively parallel and are arranged on the surface of the insulated substrate at intervals; the plurality of line electrode leads and the plurality of row electrode leads are mutually cross; each two adjacent line electrode leads and two adjacent row electrode leads from a grid; a plurality of electronic emission units are arranged on the surface of the insulated substrate; each electronic emission unit is arranged corresponding to one grid and comprises a first electrode, a second electrode and a plurality of electronic emitters, wherein the second electrode and the first electrode are arranged at intervals; at least part of the first electrode surrounds the second electrode; and the plurality of electronic emitters are arranged on the surface of at least one of the first electrode and the second electrode. The invention further provides a field-emission display device adopting the field-emission electronic device.
Description
Technical field
The present invention relates to a kind of field electron transmitting device, relate in particular to a kind of plane type field emission electronic device.
Background technology
Field electron transmitting device is worked under low temperature or room temperature, compares advantages such as having low in energy consumption, fast response time and low venting with the thermionic emission device.Field electron transmitting device has in field emission display device widely to be used.
Field emission display device of the prior art comprises a dielectric base, a plurality of pixel cell and a plurality of column electrode lead-in wire and a plurality of row contact conductors.Wherein, described a plurality of column electrode lead-in wire and a plurality of row contact conductors are parallel and uniformly-spaced be arranged at the dielectric base surface respectively.Described a plurality of column electrode lead-in wire is mutually arranged in a crossed manner with a plurality of row contact conductors, and the row contact conductor that per two adjacent column electrodes go between and two adjacent forms a grid.Described a plurality of pixel cell is arranged according to predetermined rule, is arranged at intervals in the above-mentioned grid, and a pixel cell is set in each grid.Described pixel cell comprises a cathode electrode, and one is arranged at the electron emitter of this cathode electrode surface, an anode electrode that arranges with this cathode electrode interval, and a phosphor powder layer that is arranged at this anode electrode surface.When between this cathode electrode and anode electrode, applying a voltage, the electron emitter electron emission, luminous with the impact fluorescence bisque.
Yet, in the above-mentioned field emission display device, because only comprising a cathode electrode and an anode electrode interval, each pixel unit arranges, so the electronic transmitting efficiency of this field emission display device is lower, thus so that field emission display device luminance range.
Summary of the invention
In view of this, necessaryly provide a kind of electronic transmitting efficiency higher field electron transmitting device.
A kind of field electron transmitting device, it comprises: a dielectric base has a surface; A plurality of column electrodes lead-in wire and a plurality of row contact conductors are parallel and be arranged at intervals at the surface of described dielectric base respectively, these a plurality of column electrode lead-in wires are mutually arranged in a crossed manner with a plurality of row contact conductors, and the row contact conductor that per two adjacent column electrodes go between and two adjacent forms a grid; And a plurality of electron emission unit are arranged at the surface of dielectric base, the corresponding grid setting of each electron emission unit, and each electron emission unit comprises one first electrode, one second electrode and this first electrode gap setting and a plurality of electron emitter; Wherein, described the second electrode is cuboid, described the first electrode retaining collar is around described the second electrode setting, and comprise one first sub-electrode, one second sub-electrode, and one the 3rd sub-electrode, at least a portion of described the first sub-electrode and the second sub-electrode is arranged at respectively the second electrode both sides, and between the second electrode and adjacent two row contact conductors, described the 3rd sub-electrode connects described the first sub-electrode and the second sub-electrode, and described a plurality of electron emitters are arranged at described the first sub-electrode of part between the second electrode and adjacent two row contact conductors and the surface of the second sub-electrode.
Compared to prior art, one electrode of described field electron transmitting device is at least part of to be arranged around another electrode, and a plurality of electron emitters are arranged at the surface of at least one electrode, thereby so that field emission display device has the high field emission current, and adopt the field emission display device of this field electron transmitting device to have higher brightness.
Description of drawings
The schematic top plan view of the field emission display device that Fig. 1 provides for first embodiment of the invention.
Fig. 2 is the generalized section of field emission display device II-II along the line shown in Figure 1.
The structural representation of the field emission display device that Fig. 3 provides for second embodiment of the invention.
The schematic top plan view of the field emission display device that Fig. 4 provides for third embodiment of the invention.
Fig. 5 is the generalized section of field emission display device V-V along the line shown in Figure 4.
The structural representation of the field emission display device that Fig. 6 provides for fourth embodiment of the invention.
The schematic top plan view of the field emission display device that Fig. 7 provides for fifth embodiment of the invention.
The schematic top plan view of the field emission display device that Fig. 8 provides for sixth embodiment of the invention.
The schematic top plan view of the field emission display device that Fig. 9 provides for seventh embodiment of the invention.
Figure 10 is the generalized section of field emission display device X-X along the line shown in Figure 9.
The main element symbol description
Field emission display device 200,300,400,500,600,700,800
Dielectric base 202,302,402,502,602,702,802
Column electrode lead-in wire 204,304,404,504,604,704,804
Row contact conductor 206,306,406,506,606,706,806
Electron emitter 208,308,408,508,608,708,808
The second electrode 210,310,410,510,610,710,810
Loading end 3102,5122
Wire 6104,7104
The first electrode 212,312,412,612,712,812
The first sub-electrode 2121,4121,5121,8121
The second sub-electrode 2123,4123,5123,8123
The 3rd sub-electrode 2125,4125,5125
Grid 214,614,714
Phosphor powder layer 218,318,418,518,618,718,818
Pixel cell 220,320,420,520,620,720,820
Electron transmitting terminal 222,322,422,522,622,722,822
Retaining element 224
Embodiment
Below with reference to accompanying drawing field electron transmitting device of the present invention and field emission display device are described in further detail.Be appreciated that described field electron transmitting device and field emission display device can comprise a plurality of pixel cells, it is that example describes that embodiment of the invention accompanying drawing only provides the partial pixel unit.
See also Fig. 1, Fig. 2, first embodiment of the invention provides a kind of field emission display device 200, it comprises a dielectric base 202, a plurality of pixel cell 220 and a plurality of column electrode lead-in wires 204 and a plurality of row contact conductors 206 that are arranged at these dielectric base 202 surfaces.
Described a plurality of column electrode lead-in wire 204 arranges at parallel, interval respectively with row contact conductor 206, and is preferred,, the uniformly-spaced setting parallel with row contact conductor 206 difference of described a plurality of column electrodes lead-in wires 204.Described a plurality of column electrode lead-in wire 204 is mutually arranged in a crossed manner with a plurality of row contact conductors 206, and the contact conductor 204 of being expert at is provided with a dielectric insulation layer 216 with row contact conductor 206 infalls.This dielectric insulation layer 216 is with column electrode lead-in wire 204 and the 206 electricity isolation of row contact conductor, to prevent short circuit.Per two adjacent 204 and two adjacent row contact conductors of column electrode lead-in wire 206 form a grid 214, and each pixel cell 220 in grid 214 location.Described a plurality of pixel cell 220 corresponding grids 214 are arranged to an array.Need to be encapsulated in the vacuum environment when being appreciated that described field emission display device 200 work.
Described dielectric base 202 is an insulated substrate, such as ceramic substrate, glass substrate, resin substrate, quartz base plate etc.Size and the thickness of described dielectric base 202 are not limit, and those skilled in the art can select according to actual needs.In the present embodiment, described dielectric base 202 is preferably a glass substrate, and its thickness is greater than 1 millimeter, and the length of side is greater than 1 centimetre.
Described column electrode lead-in wire 204 is electric conductor with row contact conductor 206, such as metal level etc.In the present embodiment, it is the plane electric conductor of rectangle that these a plurality of column electrode lead-in wires 204 are preferably the cross section that adopts electrocondution slurry to print with a plurality of row contact conductors 206, and the line space of these a plurality of column electrode lead-in wires 204 is 50 microns ~ 2 centimetres, and the column pitch of a plurality of row contact conductors 206 is 50 microns ~ 2 centimetres.This column electrode lead-in wire 204 is 30 microns ~ 100 microns with the width of row contact conductor 206, and thickness is 10 microns ~ 50 microns.In the present embodiment, the intersecting angle of this column electrode lead-in wire 204 and row contact conductor 206 be 10 degree to 90 degree, be preferably 90 degree, this column electrode lead-in wire 204 is mutual vertical with row contact conductor 206.In the present embodiment, can electrocondution slurry be printed on dielectric base 202 surface preparation column electrode lead-in wires 204 and row contact conductor 206 by silk screen print method.The composition of this electrocondution slurry comprises metal powder, glass powder with low melting point and binding agent; Wherein, this metal powder is preferably silver powder, and this binding agent is preferably terpinol or ethyl cellulose.In this electrocondution slurry, the weight ratio of metal powder is 50 ~ 90%, and the weight ratio of glass powder with low melting point is 2 ~ 10%, and the weight ratio of binding agent is 8 ~ 40%.In the present embodiment, the bearing of trend of described column electrode lead-in wire 204 is defined as directions X, the bearing of trend of described row contact conductor 206 is defined as Y-direction.
Described a plurality of pixel cell 220 correspondences are arranged in the above-mentioned grid 214, and in each grid 214 pixel cell 220 are set.Each pixel cell 220 comprises one first electrode 212, one second electrode 210, a plurality of electron emitter 208 and a phosphor powder layer 218.Described the first electrode 212 and the second electrode 210 are arranged at intervals at dielectric base 202 surfaces, and this first electrode 212 is at least part of around 210 settings of described the second electrode.So-called " at least part of arrange around described the second electrode 210 " refer to that described the first electrode 212 is at least part of and extend around described the second electrode 210, thereby form " L " shape, " U " shape, " C " shape, semi-circular or annular etc.Described the first electrode 212 is as cathode electrode, and is electrically connected with described row contact conductor 206.Described the second electrode 210 is as anode electrode, and is electrically connected with described column electrode lead-in wire 204.Described a plurality of electron emitter 208 is arranged at described the first electrode 212 surfaces, and arranges with described the second electrode 210 intervals.Described phosphor powder layer 218 is arranged at a surface of described the second electrode 210.The electronics of described electron transmitting terminal 222 emissions can be got to phosphor powder layer 218 and make it luminous.
Described the second electrode 210 is electric conductor, such as metal level, ITO layer, electrocondution slurry etc.Described the second electrode 210 directly contacts with described column electrode lead-in wire 204, thereby realizes being electrically connected.In the present embodiment, described the second electrode 210 is that a cross section is the plane electric conductor of rectangle, and its size determines according to the size of grid 214.Preferably, described the second electrode 210 is along the strip that extends on the Y-direction.The length that described the second electrode 210 extends in Y-direction is 30 microns ~ 1.5 centimetres, and the width that extends at directions X is 20 microns ~ 1 centimetre, and thickness is 10 microns ~ 500 microns.Preferably, the length that described the second electrode 210 extends in Y-direction is 100 microns ~ 700 microns, and the width that extends at directions X is 50 microns ~ 500 microns, and thickness is 20 microns ~ 100 microns.
Described the first electrode 212 is electric conductor, such as metal level, ITO layer, electrocondution slurry etc.In the present embodiment, described the first electrode 212 is that a cross section is the plane electric conductor of rectangle.Described the first electrode 212 comprises one first sub-electrode, 2121, one second sub-electrodes 2123, and one the 3rd sub-electrode 2125.Described the first sub-electrode 2121 and the second sub-electrode 2123 are arranged at respectively the second electrode 210 both sides, and between the second electrode 210 and adjacent two row contact conductors 206.Thereby described the 3rd sub-electrode 2125 connects the integrative-structure that described the first sub-electrodes 2121 and the second sub-electrode 2123 form one " U " shape, with described the second electrode 210 around.In the present embodiment, the material of described the first electrode 212 and the second electrode 210 is electrocondution slurry.Described the first electrode 212 and the second electrode 210 can be printed on described dielectric base 202 surfaces by silk screen print method.Preferably, described the first electrode 212 is one-body molded with row contact conductor 206.It is 204 one-body molded that described the second electrode 210 and column electrode go between.
Described phosphor powder layer 218 is arranged at described the second electrode 210 away from the surface of dielectric base 202, and concrete, described phosphor powder layer 218 can be arranged at part surface or all surfaces of the second electrode 210.When phosphor powder layer 218 was arranged at the part surface of described the second electrode 210, described phosphor powder layer 218 was arranged at the relative part of the second electrode 210 and a plurality of electron emitter 208.The material of described phosphor powder layer 218 can be white fluorescent powder, also can be monochromatic fluorescent material, and is for example red, green, and blue colour fluorescent powders etc. can send white light or other color visible light when electronics impact fluorescence bisque 218.This phosphor powder layer 218 can adopt sedimentation, print process, photoetching process or coating process to be arranged on the surface of the second electrode 210.The thickness of this phosphor powder layer 218 can be 5 microns to 50 microns.
Be appreciated that, described field emission display device 200 can further include a third electrode (not shown) and described dielectric base 202 parallel and interval settings, described phosphor powder layer 218 is arranged at the surface of the relatively described dielectric base 202 of this third electrode, and each phosphor powder layer 218 and a pixel cell 220 are oppositely arranged.At this moment, during described field emission display device 200 work, the first electrode 212 is as cathode electrode, and the second electrode 210 is as gate electrode, and third electrode is as anode electrode.Described electron emitter 208 is electron emission under the effect of the second electrode 210, and the electronics of emission under the third electrode effect to the accelerated motion of third electrode direction, with impact fluorescence bisque 218.
Described a plurality of electron emitter 208 is arranged at described the first electrode 212 surfaces, and at least part of at least both sides that arrange or be arranged at described the second electrode 210 around described the second electrode 210.Described a plurality of electron emitter 208 arranges with described dielectric base 202 intervals, preferably, is parallel to dielectric base 202 surfaces and arranges.At least one end of described electron emitter 208 is along the electron transmitting terminal 222 that extends away from the direction of described the first electrode 212 as electron emitter 208.Described electron transmitting terminal 222 arranges with described the second electrode 210 intervals.In the present embodiment, described a plurality of electron emitters 208 are arranged at respectively described the first sub-electrode 2121 and the second sub-electrode 2123 surfaces, and each electron emitter 208 is thread like body, have an electron transmitting terminal 222 and point to described the second electrode 210 directions.Be appreciated that described a plurality of electron emitter 208 also can further be arranged at described the 3rd sub-electrode 2125 surfaces.Described electron emitter 208 can be selected from one or more in silicon line, carbon nano-tube, carbon fiber and the carbon nano tube line etc.And electron emitter 208 comprises an electron transmitting terminal 222, and this electron transmitting terminal 222 is that electron emitter 208 is away from an end of the first electrode 212.In the present embodiment, described a plurality of electron emitter 08 is a plurality of carbon nano tube lines that are arranged in parallel, one end of each carbon nano tube line is electrically connected with the first electrode 212, and the other end points to the phosphor powder layer 218 on the second electrode 210 surfaces, as the electron transmitting terminal 222 of electron emitter 208.Distance between this electron transmitting terminal 222 and the second electrode 210 is 10 microns ~ 500 microns.Preferably, the distance between this electron transmitting terminal 222 and the second electrode 210 is 50 microns ~ 300 microns.The bearing of trend of described electron emitter 208 is basically parallel to the surface of described phosphor powder layer 218.Be appreciated that the electron transmitting terminal 222 of described electron emitter 208 also can unsettledly be arranged at the top of phosphor powder layer 218.
Described electron emitter 208 1 ends can for directly being electrically connected or being electrically connected by a conducting resinl, also can be realized by molecular separating force or other modes with the electric connection mode of the first electrode 212.The length of this carbon nano tube line is 10 microns ~ 1 centimetre, and the spacing between the adjacent carbon nano tube line is 1 micron ~ 500 microns.This carbon nano tube line comprises a plurality of carbon nano-tube of arranging along the carbon nano tube line length direction.This carbon nano tube line can be the pure structure that a plurality of carbon nano-tube form, and described " pure structure " refers to that carbon nano-tube is not passed through any chemical modification or functionalization in this carbon nano tube line.Preferably, described carbon nano tube line is self supporting structure.So-called " self supporting structure " i.e. this carbon nano tube line need not by a support body supports, also can keep self specific shape.Carbon nano-tube in the described carbon nano tube line links to each other by Van der Waals force, axially all substantially the extending along the length direction of carbon nano tube line of carbon nano-tube, and wherein, each carbon nano-tube joins end to end by Van der Waals force with carbon nano-tube adjacent on this bearing of trend.Carbon nano-tube in the described carbon nano tube line comprises one or more in single wall, double-walled and the multi-walled carbon nano-tubes.The length range of described carbon nano-tube is 10 microns ~ 100 microns, and the diameter of carbon nano-tube is less than 15 nanometers.
Described a plurality of electron emitter 208 can be by printed carbon nanotube pulp layer or the method preparation of laying carbon nano-tube film.Described carbon nano tube paste comprises carbon nano-tube, glass powder with low melting point and organic carrier.Wherein, organic carrier evaporates in bake process, and glass powder with low melting point melts in bake process and carbon nano-tube is fixed in electrode surface.
Particularly, the preparation method of the electron emitter in the present embodiment 208 may further comprise the steps:
Step 1 provides at least one carbon nano-tube film.
Described carbon nano-tube film pulls acquisition from a carbon nano pipe array.Comprise a plurality of carbon nano-tube that join end to end and align in this carbon nano-tube film.Structure of described carbon nano-tube film and preparation method thereof sees also the people such as Fan Shoushan in application on February 9th, 2007, CN101239712B China's Mainland bulletin patent application " carbon nano-tube thin-film structure and preparation method thereof " in bulletin Mays 26 in 2010, applicant: Tsing-Hua University, Hongfujin Precise Industry (Shenzhen) Co., Ltd.).
Step 2 is covered in the first electrode 212 and the second electrode 210 surfaces with this carbon nano-tube film laying.
Be appreciated that carbon nano-tube films are overlapping when being layed in the first electrode 212 and the second electrode 210 surface when will at least two, the carbon nano-tube in adjacent two carbon nano-tube films to extend axially direction basic identical.When the carbon nano-tube film laying is covered in above-mentioned the first electrode 212 and the second electrode 210, guarantee that the bearing of trend of the carbon nano-tube in this carbon nano-tube film is all substantially for extending to the second electrode 210 from the first electrode 212.In the present embodiment, owing to carbon nano-tube film will be processed into a plurality of carbon nano tube lines parallel and that uniformly-spaced arrange in subsequent step, therefore, the number of plies of carbon nano-tube film is difficult for too many, is preferably 1 ~ 5 layer.Further, available organic solvent is processed described carbon nano-tube film, and this organic solvent is volatile organic solvent, such as ethanol, methyl alcohol, acetone, dichloroethanes or chloroform, and the preferred ethanol that adopts in the present embodiment.After this organic solvent volatilization, described carbon nano-tube film can part be assembled the formation carbon nano tube line under the capillary effect of volatile organic solvent.
Step 3, the cutting carbon nanotubes film disconnects the carbon nano-tube film between the first electrode 212 and the second electrode 210, forms a plurality of carbon nano tube lines that are arranged in parallel and is fixed in the first electrode 212 surfaces as electron emitter 208.
The method of described cutting carbon nanotubes membrane structure is laser ablation method, electron beam scanning method or heating fusing method.In the present embodiment, preferably adopt laser ablation method cutting carbon nanotubes film, specifically may further comprise the steps:
At first, adopt the laser beam of one fixed width to scan along each column electrode lead-in wire 204, the carbon nano-tube film between the electrode of removal different rows is so that the carbon nano-tube film that stays only is arranged at the first electrode 212 of delegation and the surface of the second electrode 210.
Secondly, adopt the laser beam of one fixed width to scan along each row contact conductor 206, remove the carbon nano-tube film between row contact conductor 206 and adjacent the second electrode 210, and so that the first electrode 212 in the same grid 214 and the carbon nano-tube film between the second electrode 210 and 210 disconnections of the second electrode.
In this step, when laser beam flying, because temperature raises after this carbon nano-tube film is by Ear Mucosa Treated by He Ne Laser Irradiation, thereby reducing perpendicular to carbon nano-tube bearing of trend generation contraction, form carbon nano tube line.And in the process of laser beam irradiation, the carbon nano-tube that airborne oxygen meeting oxidation Ear Mucosa Treated by He Ne Laser Irradiation arrives, so that carbon nano-tube evaporation, thereby make carbon nano-tube film produce fracture, breaking part at carbon nano-tube film can form an electron transmitting terminal 222, and forms an interval between electron transmitting terminal 222 and the second electrode 210.In the present embodiment, the power of used laser beam is 10 ~ 50 watts, and sweep speed is 0.1 ~ 10000 mm/second.The width of described laser beam is 1 micron ~ 400 microns.
Further, each pixel cell 220 of this field emission display device 200 may further include a retaining element 224 and is arranged at the first electrode 212 surfaces, a plurality of electron emitters 208 are fixed in the first electrode 212 surfaces.Described retaining element 224 can be made of insulation material or conductive material.In the present embodiment, this retaining element 224 is the conductive paste bed of material.
See also Fig. 3, second embodiment of the invention provides a kind of field emission display device 300, and it comprises a dielectric base 302, a plurality of pixel cells 320 and a plurality of column electrode lead-in wire 304 and a plurality of row contact conductors 306.Described field emission display device 300 is basic identical with the structure of the field emission display device 200 that first embodiment of the invention provides, and its difference is: described the second electrode 310 has two and is oppositely arranged with the first electrode 312 of both sides respectively and the loading end 3102 that arranges of described dielectric base 302 dorsad.
So-called " relative the first electrode 312 arranges " refers to that described loading end 3102 arranges in the face of described the first electrode 312, thereby so that described the first electrode 312 and the second electrode 310 lay respectively at the both sides of loading end 3102.So-called " described dielectric base 302 arranges dorsad " refers to that described loading end 3102 is at least part of towards the direction away from described dielectric base 302.Described loading end 3102 can be plane or curved surface.When described loading end 3102 was the plane, described loading end 3102 formed one greater than zero degree and less than 90 angles of spending with the surface of dielectric base 302.Preferably, the angle of this angle is more than or equal to 30 degree and less than or equal to 60 degree.When described loading end 3102 was curved surface, this loading end 3102 can be convex surface or concave surface.Described loading end 3102 can directly intersect with the surface of dielectric base 302 or the interval arranges.
Particularly, in the present embodiment, described the second electrode 310 is strip, and the width of described the second electrode 310 reduces gradually along the direction away from dielectric base 302, thereby makes this second electrode 310 have two inclined-planes that are oppositely arranged with the first electrode 312 of both sides respectively as loading end 3102.Described phosphor powder layer 318 is arranged at respectively two loading ends 3102 of described the second electrode 310, and described electron transmitting terminal 322 points to phosphor powder layer 318.Angle between described two loading ends 3102 is more than or equal to 30 degree and less than or equal to 120 degree, and described each loading end 3102 is spent more than or equal to 30 degree and less than or equal to 75 with the angle on dielectric base 302 surfaces.Preferably, the angle between described two loading ends 3102 is more than or equal to 60 degree and less than or equal to 90 degree, and described each loading end 3102 is spent more than or equal to 45 degree and less than or equal to 60 with the angle on dielectric base 302 surfaces.In the present embodiment, the angle between described two loading ends 3102, and the angle on two loading ends 3102 and dielectric base 302 surfaces is 60 degree.
In the present embodiment, described the second electrode 310 can be by printing conductive slurry repeatedly, and the method that reduces gradually the width of the electrocondution slurry that prints forms.Because the width of the electrocondution slurry of each printing reduces gradually, and electrocondution slurry itself has certain trickling, thereby forms loading end 3102.
In the present embodiment, because having two, described the second electrode 310 is oppositely arranged with the electron transmitting terminal 322 of both sides respectively and the loading end 3102 that arranges of described dielectric base 302 dorsad, and described phosphor powder layer 318 is arranged at respectively two loading ends 3102, so that phosphor powder layer 318 not only has larger area, and the electronics of being launched by electron transmitting terminal 322 easily bombards, thereby so that field emission display device 300 has higher brightness.
See also Fig. 4 and Fig. 5, third embodiment of the invention provides a kind of field emission display device 400, and it comprises a dielectric base 402, a plurality of pixel cells 420 and a plurality of column electrode lead-in wire 404 and a plurality of row contact conductors 406.The present embodiment accompanying drawing only provides a pixel cell 420.Described field emission display device 400 is basic identical with the structure of the field emission display device 200 that first embodiment of the invention provides, its difference is: described the first electrode 412 is as anode electrode, described the second electrode 410 is as cathode electrode, described a plurality of electron emitter 408 is arranged at described the second electrode 410 surfaces, and described phosphor powder layer 418 is arranged at the first electrode 412 surfaces.
Particularly, in the present embodiment, described the first electrode 412 is the plane electric conductor of rectangle for cross section.Described phosphor powder layer 418 is arranged at described the first sub-electrode 4121 and the second sub-electrode 4123 away from the surface of dielectric base 402.Described a plurality of electron emitter 408 is arranged at the second electrode 410 surfaces, and the electron transmitting terminal 422 of electron emitter 408 is divided into two parts, extends to described the first sub-electrode 4121 and the second sub-electrode 4123 directions respectively.In the present embodiment, described a plurality of electron emitters 408 are a plurality of carbon nano tube lines that cross the second electrode 410, and the phosphor powder layer 418 that is positioned at described the first sub-electrode 4121 and the second sub-electrode 4123 surfaces is pointed to respectively at the two ends of each carbon nano tube line.Be appreciated that described phosphor powder layer 418 also can further be arranged at described the 3rd sub-electrode 4125 away from the surface of dielectric base 402, and the portions of electronics transmitting terminal 422 of a plurality of electron emitter 408 points to the 3rd sub-electrode 4125.
In the present embodiment, described the second electrode 410 surfaces are provided with a plurality of electron emitters 408, and the electron transmitting terminal 422 of a plurality of electron emitters 408 is divided into two parts, sensing is positioned at described the first sub-electrode 4121 and the second sub-electrode 4123 respectively, so improved the field emission current of each pixel cell 420.Therefore, described field emission display device 400 has higher brightness.
See also Fig. 6, fourth embodiment of the invention provides a kind of field emission display device 500, and it comprises a dielectric base 502, a plurality of pixel cells 520 and a plurality of column electrode lead-in wire 504 and a plurality of row contact conductors 506.The present embodiment accompanying drawing only provides a pixel cell 520.Described field emission display device 500 is basic identical with the structure of the field emission display device 400 that third embodiment of the invention provides, and its difference is: described the first sub-electrode 5121 and the second sub-electrode 5123 all have one and are oppositely arranged with electron transmitting terminal 522 and the loading end 5122 that arranges of described dielectric base 502 dorsad.
Particularly, in the present embodiment, the width of described the first sub-electrode 5121 and the second sub-electrode 5123 all reduces gradually along the direction away from dielectric base 502, thereby makes this first sub-electrode 5121 and the second sub-electrode 5123 have respectively an inclined-plane that is oppositely arranged with a plurality of electron emitters 508 as loading end 5122.Described phosphor powder layer 518 is arranged at respectively the loading end 5122 of described the first sub-electrode 5121 and the second sub-electrode 5123, and described electron transmitting terminal 522 points to phosphor powder layer 518.Described loading end 5122 forms one greater than zero degree and less than 90 angles of spending with the surface of dielectric base 502.Preferably, the angle of this angle is more than or equal to 30 degree and less than 60 degree.In the present embodiment, described loading end 5122 is 45 degree with the angle on dielectric base 502 surfaces.
In the present embodiment, described the first sub-electrode 5121 and the second sub-electrode 5123 all have one and are oppositely arranged with electron emitter 508 and the loading end 5102 that arranges of described dielectric base 502 dorsad, and described phosphor powder layer 518 is arranged at respectively described two loading ends 5102, so improved the brightness of described field emission display device 500 and shown the uniformity.
See also Fig. 7, fifth embodiment of the invention provides a kind of field emission display device 600, and it comprises a dielectric base 602, a plurality of pixel cells 620 and a plurality of column electrode lead-in wire 604 and a plurality of row contact conductors 606.The present embodiment accompanying drawing only provides a pixel cell 620.Described field emission display device 600 is basic identical with the structure of the field emission display device 200 that first embodiment of the invention provides, its difference is: described the first electrode 612 surrounds the second electrode 610 entirely, and the first electrode 612 surfaces around described the second electrode 610 are provided with a plurality of electron emitters 608.
Particularly, the shape of described the second electrode 610 is identical with the shape of grid 614, and is arranged at the middle position of grid 614.Described the second electrode 610 is electrically connected with column electrode lead-in wire 604 by an one-body molded wire 6104.Described the first electrode 612 arranges around the second electrode 610, thereby and the crossover location of described the first electrode 612 and wire 6104 insulating barrier is set or forms an opening and make the first electrode 612 and wire 6104 electric insulations.Described a plurality of electron emitter 608 arranges around the second electrode 610, and the electron transmitting terminal 622 of electron emitter points to phosphor powder layer 618.The shape that is appreciated that described the second electrode 610 and the first electrode 612 is not limited to above-mentioned shape, as long as the first electrode 612 surrounds the second electrode 610.As, described the second electrode 610 is circular, described the first electrode 612 is annulus or " C " shape.
See also Fig. 8, sixth embodiment of the invention provides a kind of field emission display device 700, and it comprises a dielectric base 702, a plurality of pixel cells 720 and a plurality of column electrode lead-in wire 704 and a plurality of row contact conductors 706.The present embodiment accompanying drawing only provides a pixel cell 720.Described field emission display device 700 is basic identical with the structure of the field emission display device 600 that fifth embodiment of the invention provides, its difference is: described the first electrode 712 is as anode electrode, described the second electrode 710 is as cathode electrode, and the first electrode 712 surfaces around described the second electrode 710 are provided with phosphor powder layer 718.
Particularly, the shape of described the second electrode 710 is identical with the shape of grid 714, and described the first electrode 712 arranges around the second electrode 710, and the crossover location of described the first electrode 712 and wire 7104 forms an opening.Described phosphor powder layer 718 is arranged at described the first electrode 712 surfaces, and arranges around described the second electrode 710.Described a plurality of electron emitter 708 is arranged at the surface of described the second electrode 710, and the peripherad phosphor powder layer 718 of electron transmitting terminal 722 fingers of described a plurality of electron emitter 708.Described a plurality of electron emitter 708 can be by laying carbon nano-tube film in the second electrode 710 surface crosswise, and then the method for laser cutting forms.
See also Fig. 9 and Figure 10, seventh embodiment of the invention provides a kind of field emission display device 800, and it comprises a dielectric base 802, a plurality of pixel cells 820 and a plurality of column electrode lead-in wire 804 and a plurality of row contact conductors 806.The present embodiment accompanying drawing only provides a pixel cell 820.Described field emission display device 800 is basic identical with the structure of the field emission display device 200 that first embodiment of the invention provides, and its difference is: described the first electrode 812 and the second electrode 810 surfaces are provided with a plurality of electron emitters 808 and phosphor powder layer 818.
Particularly, described a plurality of electron emitter 808 is arranged at respectively described the first sub-electrode 8121, the second sub-electrodes 8123 and the second electrode 810 away from the surface of dielectric base 802.Described phosphor powder layer 818 is arranged at respectively described the first sub-electrode 8121, the second sub-electrodes 8123 and the second electrode 810 away from the surface of dielectric base 802, and with a plurality of electron emitter 808 partial coverages.The electron emitter 808 on described the first sub-electrode 8121 and the second sub-electrode 8123 surfaces extends to the second electrode 810 directions respectively, and its electron transmitting terminal 822 points to the phosphor powder layer 818 on the second electrode 810 surfaces.The electron emitter 808 on described the second electrode 810 surfaces extends to the first sub-electrode 8121 and the second sub-electrode 8123 directions respectively, and its electron transmitting terminal 822 points to the phosphor powder layer 818 on the first sub-electrode 8121 and the second sub-electrode 8123 surfaces.
In the present embodiment, described the first electrode 812 and the second electrode 810 can alternately be used as cathode electrode and anode electrode, thus the useful life of having improved field emission display device 800.Preferably, can apply an alternating voltage between described the first electrode 812 and the second electrode 810, thereby make described the first electrode 812 and the second electrode 810 can alternately be used as cathode electrode and anode electrode.
In addition, those skilled in the art also can do other variations in spirit of the present invention, and certainly, these are according to this
The variation that invention spirit is done all should be included within the present invention's scope required for protection.
Claims (12)
1. field electron transmitting device, it comprises:
One dielectric base has a surface;
A plurality of column electrodes lead-in wire and a plurality of row contact conductors are parallel and be arranged at intervals at the surface of described dielectric base respectively, these a plurality of column electrode lead-in wires are mutually arranged in a crossed manner with a plurality of row contact conductors, and the row contact conductor that per two adjacent column electrodes go between and two adjacent forms a grid; And
A plurality of electron emission unit are arranged at the surface of dielectric base, the corresponding grid setting of each electron emission unit, and each electron emission unit comprises one first electrode, one second electrode and this first electrode gap setting and a plurality of electron emitter;
It is characterized in that, described the second electrode is cuboid, described the first electrode retaining collar is around described the second electrode setting, and comprise one first sub-electrode, one second sub-electrode, and one the 3rd sub-electrode, at least a portion of described the first sub-electrode and the second sub-electrode is arranged at respectively the second electrode both sides, and between the second electrode and adjacent two row contact conductors, described the 3rd sub-electrode connects described the first sub-electrode and the second sub-electrode, and described a plurality of electron emitters are arranged at described the first sub-electrode of part between the second electrode and adjacent two row contact conductors and the surface of the second sub-electrode.
2. field electron transmitting device as claimed in claim 1 is characterized in that, described the first electrode is at least part of to be extended around described the second electrode, and described the first electrode is " U " shape, " C " shape, semi-circular or annular.
3. field electron transmitting device as claimed in claim 1 is characterized in that, described a plurality of electron emitters further are arranged at the surface of described the second electrode.
4. field electron transmitting device as claimed in claim 3 is characterized in that, during described field electron transmitting device work, to a plurality of column electrode lead-in wires and a plurality of row contact conductor incoming transport voltage.
5. field electron transmitting device as claimed in claim 1 is characterized in that, described electron emitter is wire, and described electron emitter is parallel to the surface setting of described dielectric base.
6. field electron transmitting device as claimed in claim 1 is characterized in that, described electron emitter is selected from one or more in silicon line, the carbon fiber.
7. field electron transmitting device as claimed in claim 1, it is characterized in that, further comprise a third electrode and interval setting parallel with described dielectric base, during described field emission display device work, the electron emitter that arranges on described the first electrode is electron emission under the second electrode effect, and the emission electronics under the third electrode effect to the accelerated motion of third electrode direction.
8. field electron transmitting device as claimed in claim 1, it is characterized in that, comprise that further a plurality of electron emitters are arranged at the surface of described the second electrode, this electron emitter that is arranged at described the second electrode surface has an electron transmitting terminal and points to described the first electrode, and with a plurality of electron emitter electric insulations that are arranged at described the first electrode surface.
9. field electron transmitting device as claimed in claim 8 is characterized in that, the surface of described the first electrode and the second electrode is provided with fluorescence coating.
10. field electron transmitting device as claimed in claim 1, it is characterized in that, described first sub-electrode of described the first electrode, described the 3rd sub-electrode and described the second sub-electrode sequentially link together and entirely surround described the second electrode, around described the first sub-electrode that described the second electrode arranges, described the 3rd sub-electrode and described the second sub-electrode are provided with a plurality of electron emitters.
11. field electron transmitting device as claimed in claim 1 is characterized in that, described electron emitter is selected from carbon nano-tube.
12. field electron transmitting device as claimed in claim 1 is characterized in that, described electron emitter is selected from carbon nano tube line.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010612598.1A CN102087947B (en) | 2010-12-29 | 2010-12-29 | Field-emission electronic device |
| CN201210224519.9A CN102768929B (en) | 2010-12-29 | 2010-12-29 | Field emission display device |
| US13/156,517 US8598774B2 (en) | 2010-12-29 | 2011-06-09 | Field emission device and field emission display |
| US14/059,758 US8872418B2 (en) | 2010-12-29 | 2013-10-22 | Field emission display |
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| CN201010612598.1A CN102087947B (en) | 2010-12-29 | 2010-12-29 | Field-emission electronic device |
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| CN201210224519.9A Division CN102768929B (en) | 2010-12-29 | 2010-12-29 | Field emission display device |
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| CN201010612598.1A Active CN102087947B (en) | 2010-12-29 | 2010-12-29 | Field-emission electronic device |
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| CN102064071B (en) * | 2010-12-16 | 2012-07-18 | 清华大学 | Field emission display device |
| CN102082062B (en) * | 2010-12-29 | 2013-03-06 | 清华大学 | Field emission display device |
| CN102543633B (en) * | 2010-12-31 | 2015-04-01 | 清华大学 | Field emission cathode device and field emission display |
| ITTO20120993A1 (en) * | 2011-11-25 | 2013-05-26 | Selex Sistemi Integrati Spa | COLD CATODO DEVICE ELECTRONICS EMITTER |
| RU2589722C1 (en) * | 2015-01-12 | 2016-07-10 | Акционерное общество "Научно-производственное предприятие "Алмаз" (АО "НПП "Алмаз") | Method of making cathode-grid assembly with carbon field-emission cathode |
| RU2586119C1 (en) * | 2015-01-12 | 2016-06-10 | Акционерное общество "Научно-производственное предприятие "Алмаз" (АО "НПП "Алмаз") | Cathode-grid assembly with carbon field-emission cathode |
| RU2652981C1 (en) * | 2017-03-07 | 2018-05-04 | Акционерное общество "Научно-производственное предприятие "Радий" | Electronic device with cold emission cathode-mesh assembly manufacturing method |
| RU2653531C1 (en) * | 2017-03-07 | 2018-05-11 | Акционерное общество "Научно-производственное предприятие "Радий"" | Electronic device with field emission cathode-mesh assembly manufacturing method |
| KR102502176B1 (en) * | 2017-10-13 | 2023-02-21 | 삼성전자주식회사 | Display apparatus and manufacturing method for the same |
| RU2713381C1 (en) * | 2019-07-01 | 2020-02-05 | Акционерное общество "Научно-производственное предприятие "Алмаз" (АО "НПП "Алмаз") | Method for fabrication of cathode-grid assembly with field-emission cathode |
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| CN1433039A (en) * | 2002-01-07 | 2003-07-30 | 深圳大学光电子学研究所 | Panchromatic great-arear flat display based on carbon nanotube field emitting array |
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| KR100908712B1 (en) * | 2003-01-14 | 2009-07-22 | 삼성에스디아이 주식회사 | Field emission display with emitter array structure to improve electron emission characteristics |
| KR20050089639A (en) * | 2004-03-05 | 2005-09-08 | 엘지전자 주식회사 | Carbon nanotube field emission device |
| JP2006173007A (en) * | 2004-12-17 | 2006-06-29 | Toshiba Corp | Electron emission element, electron emission device, and display device |
| TWI260669B (en) * | 2005-07-26 | 2006-08-21 | Ind Tech Res Inst | Field emission light-emitting device |
| CN100487852C (en) | 2006-08-02 | 2009-05-13 | 中原工学院 | Integrated stripe type cathode array structural panel display device and its production technique |
| SG140485A1 (en) * | 2006-08-24 | 2008-03-28 | Sony Corp | An electron emitter and a display apparatus utilising the same |
| WO2008029963A1 (en) | 2006-09-06 | 2008-03-13 | Hanwha Chemical Corporation | Field emission apparatus and driving method thereof |
| CN101192494B (en) * | 2006-11-24 | 2010-09-29 | 清华大学 | Electron emission element preparation method |
| CN101192490B (en) * | 2006-11-24 | 2010-09-29 | 清华大学 | Surface conductive electronic emission element and electronic source applying same |
| CN101540260B (en) | 2008-03-19 | 2011-12-14 | 清华大学 | Field emission display |
| CN102082062B (en) * | 2010-12-29 | 2013-03-06 | 清华大学 | Field emission display device |
| CN102082061B (en) * | 2010-12-29 | 2013-06-05 | 清华大学 | Field emission display device |
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| CN1433039A (en) * | 2002-01-07 | 2003-07-30 | 深圳大学光电子学研究所 | Panchromatic great-arear flat display based on carbon nanotube field emitting array |
Also Published As
| Publication number | Publication date |
|---|---|
| US8598774B2 (en) | 2013-12-03 |
| US20120169222A1 (en) | 2012-07-05 |
| CN102768929B (en) | 2015-08-26 |
| CN102087947A (en) | 2011-06-08 |
| US8872418B2 (en) | 2014-10-28 |
| US20140049184A1 (en) | 2014-02-20 |
| CN102768929A (en) | 2012-11-07 |
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